Some parts of the sentence have been jumbled up. You are required to rearrange these parts which are labelled P,Q,R and S to produce the correct sentence . Choose the proper sequence and mark in accordingly.
The prevention of disease `("facing the authorities")/(P)`, `("was by far")/(Q)`, `("after the earthquake")/(R )`, `("the most urgent problem")/(S)`.
The correct sequence should be

Options

A. QSPR
B. RPQS
C. QRPS
D. SPRQ